Mochilão: Electronics Backpack for Duender

Overview This Electronics Backpack was designed to provide a neat, fully-enclosed, and modular electronics compartment for the Duender 3D printer frame. It fits entirely within the natural shadow/projection of the A/B motor mounts extending behind the machine, so you don't lose any additional footprint or workspace. It has been tested on my duender with great results! Key Features - High Capacity: Accommodates up to a BigTreeTech Octopus-sized motherboard, Raspberry Pi, two PSUs (24V + 48V), and an SSR (or whatever you want).

- Adjustable DIN Rails: Movable rail slots make it super easy to reconfigure for different board layouts and custom components.

- Cable Management: Built-in slots on the side panels allow you to run zip-ties cleanly for tidy cable management.

- Laminar Airflow Cooling: Bottom-mounted fans push air upwards in a clean vertical laminar flow through the top vents. Bonus: It provides marginal cooling to the A/B motors above (mostly a moral boost, to be honest).

- Magnetic Panels: Quick access doors/covers held by neodymium magnets (maybe too many of them).

Hardware Required (BOM) Quantity Item Notes

3x DIN Rails 288mm length

2x Heat Set Inserts M5 x 6 x 7.5 mm

72x Neodymium Magnets 20 x 5 x 3 mm (AliExpress Link) (Note: 36x should be enough if you want to save some bucks)

12x M5x8 Screws Cap head

12x M5 Washers (Optional)

12x M5 T-Nuts

28x M4x10 Screws Cap head

22x M4 T-Nuts

6x M4 Nuts

6x M4 Washers (Optional)

1x Voron Cable Gland AliExpress Link (Trim the hex nut with an Exacto knife to fit the slot)

2–6x 4010 or 4020 Fans Sunon Maglev series recommended

1x 358x370mm black plexiglass For the inside

1x 370x400mm (or (or 2x 185x400mm) transparent plexiglass For the back door

Printed Parts List Part Name Quantity

Left Top 1x

Right Top 1x

Left Base 1x

Right Base 1x

Left Side 2x

Right Side 2x

DIN Rail Holder 2–6x

Sides / Top Magnet Holders 14x

Bottom Magnet Holders 4x